b*****u 发帖数: 75 | 1 In the image, the positively-stained area actually has less cells, thus
doesn't look like a colony. Also as aishang pointed out, the staining
pattern of KI67 is not typical.
For xenograft experiment, tumor size might be a more accurate readout (which
you already have). You can have plot, image of mice with tumor, image of
isolated tumors, western of tumor lysate to confirm the knocking-down. That
is already a bunch of data to show. Ki67 staining might be tricky, due to
highly heterogenous patter... 阅读全帖 |
|
s*********m 发帖数: 16 | 2 Patient-Derived Xenograft是做药理实验很好的模型。想请教一下各位大牛,Patient
-Derived Xenograft可以做基因功能研究吗?比如knockdown或者overexpress一个基因
,看看对肿瘤生长的影响。 |
|
f*****f 发帖数: 195 | 3 以前很多把human cancer cell line直接移植到nude mice,但最近看到好多做cancer
的对xenograft模型诟病很多。比如cell line传代次数很多已经无法估计,缺乏免疫反
应,缺乏肿瘤微环境等等。假如现在想拿xenograft肿瘤模型作高通量筛选,是不是已
经不是一个好的实验设计了?大家可以进来谈谈看法? |
|
q******g 发帖数: 3858 | 4 我在细胞系里knockdown了一个基因,然后注射到小鼠体内,形成肿瘤。肿瘤明显比对
照组要小。我们把肿瘤取出来,做切片,看ki67的表达。发现肿瘤切片里,有很多类似
colony的区域,ki67表达量很高,而他周围的区域相对较低。我感觉这些是knockdown
效率比较低的细胞,他们的生长比其他knockdown的细胞生长要快。但我看到对照组里
,也有这样的区域。感觉不太好解释。不知道谁做xenograft比较有经验,能给我讲讲
。特别是,我拍照的时候,应该选择哪个区域。谢谢了 |
|
m*****r 发帖数: 1164 | 5 目前项目需要crystallography和xenograft的实验,有用过这方面的公司的service的
朋友么,能推荐下么。谢谢。 |
|
j****1 发帖数: 81 | 6 Thank you very much for the comments. I revised abstract. It's attached
below.
----------------------------------------------------------------------------
----------------------------
Colon cancer is the second highest cause of cancer deaths in the United
States (Markowitz & Bertagnolli, 2009). It is well known that APC (
adenomatous polyposis coli) loss predisposes patients to colon cancer, which
has been primarily attributed to the over activation of Wnt signaling.
Although controversial, can... 阅读全帖 |
|
l*******1 发帖数: 16217 | 7 这个不像是编的,小鼠腹水就是打杂交瘤细胞收集单克隆抗体,
他是担心变成小鼠杂交瘤细胞的xenograft,
平常都是人的癌细胞打到小鼠身上做tumor xenograft, 只不过这次反过来了,
不放心就去医院做个癌细胞检查吧, |
|
s**u 发帖数: 9035 | 8 ^
A post-doctoral /scientist position is available immediately at A&G
Pharmaceutical to investigate the role of GP88 in human breast and
lung cancer.
The successful candidate will be responsible for the pre-clinical
program leading to the development of anti-GP88 therapeutic antibody
and carry out in vitro and in vivo studies including mouse xenografts
with various human cancer models. Candidates with PhD in Cell and
Molecular Biology are invited to ... 阅读全帖 |
|
Z**********g 发帖数: 222 | 9 简单的说,把cancer cells移植在免疫缺陷的小鼠身上,能够:
1.Initiate and maintain a xenograft tumor for serial passages.
2.The xenograft tumor phenotypically recapitulates the original tumor (
maintaining hierarchy of the tumor).
该cancer cells就可以理解为cancer stem cells. |
|
s**u 发帖数: 9035 | 10 ^
A post-doctoral /scientist position is available immediately at A&G
Pharmaceutical to investigate the role of GP88 in human breast and
lung cancer.
The successful candidate will be responsible for the pre-clinical
program leading to the development of anti-GP88 therapeutic antibody
and carry out in vitro and in vivo studies including mouse xenografts
with various human cancer models. Candidates with PhD in Cell and
Molecular Biology are invited to ap... 阅读全帖 |
|
A******y 发帖数: 2041 | 11 I don't know if they use matrigel or not. I always giggle when I saw people
using matrigel and then states that the tumor is gone. Hello, the matrigel
plug is always there unless you injected badly or not at all. For subQ
xenograft, you have to let tumor establish first i.e. growing, and then
start your treatment because the establishment was never 100% sometimes it
could be less than 50%.
However, for systemic xenograft for leukemia it is so damn aggressive and
its engraftment rate is 100%. |
|
j****1 发帖数: 81 | 12 I'm a second year Phd student and I'm doing my prelim now. I don't know if
it's okay to post my proposal abstracts online for people to comment on.
This is one of the proposals I have to write for my prelim. I hope people on
this board could give me some feedback, especially ones that have relevant
knowledge. Thanks very much.
----------------------------------------------------------------------------
-----------------------
Cancer stem cells are considered to be the source of tumor recurrence.... 阅读全帖 |
|
S*********e 发帖数: 127 | 13 1) High-throughput screening using patient-derived tumor xenografts to
predict clinical trial drug response.
Gao H, Korn JM, Ferretti S, Monahan JE, Wang Y, Singh M, Zhang C, Schnell C,
Yang G, Zhang Y, Balbin OA, Barbe S, Cai H, Casey F, Chatterjee S, Chiang
DY, Chuai S, Cogan SM, Collins SD, Dammassa E, Ebel N, Embry M, Green J,
Kauffmann A, Kowal C, Leary RJ, Lehar J, Liang Y, Loo A, Lorenzana E, Robert
McDonald E 3rd, McLaughlin ME, Merkin J, Meyer R, Naylor TL, Patawaran M,
Reddy A, Rö... 阅读全帖 |
|
a******c 发帖数: 597 | 14 情况是这样的,癌症方面的,5个大图,每个大图3-4个小图,动物表型只有xenograft
in nude mice,其余为细胞生物学实验。分子机制方面一个大图共5个小图,和表型方
面的联系不是特别strong。老板不太care这个文章,所以不太可能愿意付很贵的page
charge。但我个人比较喜欢这篇manuscript,因为图里面的结果效应都比较strong,虽
然不是什么大发现。
本来打算投neoplasia的,但page charge实在太贵$1800. 各位能推荐个便宜点的杂志
么?
谢谢!!! |
|
W*****s 发帖数: 684 | 15 Since you are willing to pay for the AD, I guess you can AD it in Science,
Nature, and Cell.
xenograft |
|
b*********1 发帖数: 1054 | 16 胖老师,从药物研发的角度讲。如果你只用细胞,甚至xenograft,别人都不承认这是
translational research. 可是,你要是也用病人肿瘤样品在裸鼠中生成肿瘤,然后测
试疗效,这就有些所谓translational research的味道了,大家比较买帐。可是肿瘤活
样品很难拿到,这种双knock out的老鼠巨贵无比,好说不好干啊。
clinical |
|
c******9 发帖数: 8 | 17 安特诺生物医药(厦门)有限公司是厦门市第三批“双百”创业、创新领军人才、
外籍归国博士于2012年12月成立的中外合资公司,落户于厦门火炬创业园。公司主要从
事肿瘤监测和免疫治疗相关的实验和临床研究,提供从美国引进的专用于评价肿瘤治疗
效果与转移程度的“循环肿瘤细胞检测”服务,是一家集科研与检测服务于一体的生物
高科技公司。公司核心研发科学家和管理人员均为生物医药领域具有几十年工作经验且
具行业权威性人物。
2013年底,因公司发展需要,整体搬迁至厦门火炬(翔安)产业区,并投资新建了
国家级标准化的GMP实验室。
目前,公司与厦门大学药学院转化中心建立了项目合作关系,成立了厦门大学药学
院安特诺细胞医药研发中心,并与多家三甲医院开展临床科研与应用研究。
公司正处于全力发展阶段,诚邀从事肿瘤免疫学、免疫学方面的有志之士具有博士
及以上学历者加盟,负责实验室研发及管理。我们的科研、管理团队将为您提供良好的
专业发展机会。对于入聘人选,公司将提供良好工作环境与丰厚的福利和薪酬待遇。
工作地点: 厦门市翔安区厦大药学院
薪酬范围:US$ 30,000-40,00... 阅读全帖 |
|
e******e 发帖数: 57 | 18 我们是一家大型制药厂,现在有 an in vivo contract job open,目前是一年合同,
可能会延长合同. 要求工作时间比较灵活, 能在晚上8-10 和周末给小鼠给药。这
个工作对未来职业发展很有好处。可以把 CV 和联系方式发给我.
可以站内联系我
In Vivo Research Associate
Job description
We are seeking a highly motivated contract Research Associate with strong
interpersonal communication skills to conduct in vivo studies in mice in our
In Vivo Pharmacology group in San Diego.
Requirements
ALAT/ALATg, or BS degree in a life science with minimum 1-2 years of hands
on laboratory experience in small animal e... 阅读全帖 |
|
e******e 发帖数: 57 | 19 In Vivo Research Associate
Job description:
We are seeking a highly motivated contract Research Associate with strong
interpersonal communication skills to conduct in vivo studies in mice at our
In Vivo oncology Pharmacology group in a large pharmaceutical company in La
Jolla ( San Diego CA). This is a great opportunity to learn drug discovery
and industrial experiences.
Requirements:
ALAT/ALATg, or BS, MS degree in a life science with minimum 1-2 years of
hands on laboratory experience in small... 阅读全帖 |
|
a******c 发帖数: 597 | 20 情况是这样的,癌症方面的,5个大图,每个大图3-4个小图,动物表型只有xenograft
in nude mice,其余为细胞生物学实验。分子机制方面一个大图共5个小图,和表型方
面的联系不是特别strong。老板不太care这个文章,所以不太可能愿意付很贵的page
charge。但我个人比较喜欢这篇manuscript,因为图里面的结果效应都比较strong,虽
然不是什么大发现。
本来打算投neoplasia的,但page charge实在太贵$1800. 各位能推荐个便宜点的杂志
么?
谢谢!!! |
|
发帖数: 1 | 21 为准备绿卡申请,求推荐审稿,主要研究方向:
Cancer immunology, cell therapy, stem cell differentiation, xenograft animal
model, diabetes, metabolic syndrome, developmental biology;
研究背景比较diversify,涉及好几个领域,已经为几个杂志审稿多篇,审稿细致认真
。请有相关领域机会审稿的帮忙推荐!如果需要可以发简历。不胜感激!
Email: [email protected]/* */
谢谢!!! |
|
e******e 发帖数: 57 | 22 In Vivo Research Associate
Job description:
We are seeking a highly motivated contract Research Associate with strong
interpersonal communication skills to conduct in vivo studies in mice at our
In Vivo oncology Pharmacology group in a large pharmaceutical company in La
Jolla ( San Diego CA). This is a great opportunity to learn drug discovery
and industrial experiences.
Requirements:
ALAT/ALATg, or BS, MS degree in a life science with minimum 1-2 years of
hands on laboratory experience in small... 阅读全帖 |
|
t*****t 发帖数: 2 | 23 Level commensurate with experience and qualification
Functions and duties including but not limited to:
1) Order and organize equipments, reagents and supplies;
2) Maintain, calibrate and order service for lab equipments;
3) Assist specific experiments and projects;
4) Lead small pilot projects.
Required skills: DNA/RNA extraction, qRT-PCR, Western blot , tissue
culturing, gene silencing and over-expression in mammalian cells,
immunofluorescent staining, immunohistochemistry, and confocal micros... 阅读全帖 |
|
I****e 发帖数: 620 | 24 关于FDA批准这个,也许我是想当然了,因为当晚去的包括我们公司在内不少
distributor,LG公司给我们的handout上明确写明"has been proven and recognized
by FDA”. LG在韩国也是有头有脸的公司,现在又想扩展北美市场,所以我不认为他们
在这点上会有撒谎可能。谢谢Gilda在这方面也花了时间做功课,礼拜一我会问他们要
FDA批文copy,FDA的电话我刚打了,周末不上班。
HA是透明质酸(玻尿酸),胎盘素核心精华是核酸,都有抗衰老作用,所以我感觉是大
同小异。
理解mm作为版主的立场,至于托一说,mm多虑了。我们公司作为distributor经营的品
牌有lancome、shiseido、chanel、dior等等,但是mm可以看我一直来的帖子,除了偶
尔答复的一两个,有没有在做托。
现在对LG公司的讨论,版上有mm说得好的,条理清楚逻辑严明有想法的,我也回帖很赞
赏。
Gilda mm你的评论我觉得值得肯定的地方我也表示肯定了。但是有一些地方我觉得你说
话是不牢靠的。比如你说“我还是写错了,原来HA是可以致癌的。。。。。”,其实
只要... 阅读全帖 |
|
G***a 发帖数: 27294 | 25 ☆─────────────────────────────────────☆
Ivraie (vicia) 于 (Fri Mar 2 03:53:31 2012, 美东) 提到:
今晚参加韩国LG公司'ISA KNOX'系列新产品TE'RVINA在LA的发布会,据说TE'RVINA是首
批应用human placenta用作cosmetics的产品(以前只用animal placenta,比如羊胎素
)。
使用人体胎盘as the raw material for cosmetics是不合乎法律的,所以LG公司
extract only the superior skin regenerating substances from the effective
ingredients of the human placenta utilizing the patent technology and human
placentas of CHA Medical Center (一间人体胎盘研究很强的医学中心)。
简言之,LG公司用一种专利技术成功从人体胎盘中提炼对人类皮肤有re... 阅读全帖 |
|
j*j 发帖数: 5564 | 26 原作者Yann Martel在写了《Life of Pi》不久之后,又写了一部作品,
《We ate the children last》
可见他对吃人这个话题耿耿于怀,难以摆脱。这暗示他写《Life of Pi》的真实意图
中确实有写人吃人那一层意思,这层意思起码占50%吧。
说白了,写小说就是一个游戏,他故意要写得亦真亦幻,让那些经历不同信仰不同的读
者们对此作不同的解读。
-------------------------------------------------
We ate the children last
Yann Martel
The Guardian, Friday 16 July 2004
The first human trial was on Patient D, a 56-year-old male, single and
childless, who was suffering from colon cancer. He was a skeletal man with
white, bloodless skin who could no longer ... 阅读全帖 |
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H********g 发帖数: 43926 | 27 These natural barriers can be overcome in a laboratory, at least at first.
Such attempts typically result in a hybrid embryo which dies after a few
cell divisions.
For example, the egg's protective covering can be stripped off, allowing the
sperm of the other species access to the egg. Sperm can also be injected
directly into the egg. When this is done, fertilization occurs. The
resulting hybrid embryo is not viable, however. It typically goes through
one cell division, resulting in a two-cell e... 阅读全帖 |
|
c****g 发帖数: 37081 | 28 关键是搞不到;氰化物太容易弄到了,没有技术含量。俺老琢磨xenografts个cancer啥
的应该不难。 |
|
c****g 发帖数: 37081 | 29 学生物的,没事xenografts 个cancer啥的,可不是好玩的。 |
|
S***n 发帖数: 1281 | 30 This was published in Nature, http://www.nature.com/articles/srep09384?WT.ec_id=SREP-631-20150331
PHY906 (KD018) is a four-herb Chinese Medicine Formula. It has been shown to
potentially enhance the therapeutic indices of different class anticancer
agents in vivo. Here, PHY906 is reported to enhance the anti-tumor
activity of Sorafenib in nude mice bearing HepG2 xenografts. Among the four
herbal ingredients of PHY906, Scutellaria baicalensis Georgi (S)
andPaeonia lactiflora P... 阅读全帖 |
|
r****o 发帖数: 105 | 31 本文献给YL
(三)五湖四海
《小鼠分子胚胎学》的老师和学生可以说来自五湖四海。主讲老师(instructor)
有两位---UMDNJ的Michael Shen和杜克大学的Blanche Capel。辅讲老师
(co-instructor)也有两位---Stowers的Paul Trainor和北卡的David Threadgill。
Michael 和Blanche在2003~2004是辅讲老师,之后转成主讲,今年则是最后一年执
教这个课。明年就会由Paul和David接班。我博士实验室和Michael 合作过,我还
是他一篇文章的第三作者。前面提过,如果不是因为认识他,我是绝无可能被这
个课录取的。所以我对他是相当感激的。以前虽然合作过,但是我没有见过他。
上了这个课之后才对他有些了解。一开始觉得他有点浮,喝酒之后还会比较疯,
比如跳到桌子上跳舞什么的。但是很快我就发现这老哥在学术上非常牛,分析
问题往往是一针见血。比如metastasis领域还主要停留在用裸鼠xenograft为
研究手段的层次上,Michael则认为这种研究方法完全不对。他的想法和我的
想法可谓是 |
|
h********n 发帖数: 4079 | 32 我个人觉得这个应该是基础研究和drug discovery之间的桥梁, 而不是translational
resear之间的桥梁, 个人意见. 或者说是chemist和biologist的联系, 还没到chemist
和physician的联系.
说点我个人的感觉, 现在大药厂研发新药失败率这么高, 问题不在化学上, 而在生物医
学上: 1.临床之前的模型的预测性不好 2.对疾病不够了解.
其中第一点是很多药在临床上失败的主要原因. 比如肿瘤的动物模型, 基本上只有白血
病的比较有预测性, 其它实体瘤的通用模型都不太行, 而各种genetically engineered
mouse model还不够. 常用的xenograft model基本上没有预测性. |
|
|
w******e 发帖数: 1187 | 34 就是些基本的解剖、perfusion、cryosection、IHC、xenograft,和PK/PD 实验。
开课的地方我只知道CSHL,和刚听说的一个woods hole,还有其他类似的地方吗?
多谢! |
|
z*******6 发帖数: 353 | 35 工作是关于signaling transduction, 主要是说明肿瘤对某个药物不敏感的分子机制,
有xenografts, 没有病人样品。
投了JCI, JEM 都送出去external review,但最后都被拒。投Molecular Cell 直接据没
有external review。大家知道还有哪些比较好的杂志更适合我们这样的translational
study ?
Plos Medicine 接受没有病人样品的文章吗?
谢谢 |
|
b******n 发帖数: 82 | 36 http://www.cell.com/abstract/S0092-8674%2810%2901180-3
The ER UDPase ENTPD5 Promotes Protein N-Glycosylation, the Warburg Effect,
and Proliferation in the PTEN Pathway
Min Fang, Zhirong Shen, Song Huang, Liping Zhao, She Chen, Tak W. Mak,
Xiaodong Wang
* Highlights
* The ER UDPase ENTPD5 is upregulated by AKT in PTEN mutant cells
* ENTPD5 hydrolyzes UDP to UMP to promote protein N-glycosylation
* ENTPD5, along with CMPK1 and AK-1, hydrolyze ATP to AMP, increasing
aerobic glycolys... 阅读全帖 |
|
h****g 发帖数: 439 | 37 那个单个癌细胞移植是不是说任何单个癌细胞都能Initiate and maintain a
xenograft tumor for serial passages,从而推翻cancer stem cell的存在? |
|
P******n 发帖数: 78 | 38 一种实验技术
只是解决某一类问题的主要方法,没有哪种实验技术可以解决所有问题。就像没有哪个
xenograft breast cancer model 可以model了所有breast cancer.b不知道大姐为啥
这么不满意。。。
在 yuuli (听,...听) 的大作中提到: 】 |
|
y****6 发帖数: 196 | 39 Optical imaging with NIR fluorephore is good for mouse imaging, especially
xenograft tumors. For human application, most likely it will be used in
optical guided surgery. |
|
A******y 发帖数: 2041 | 40 Cell culture is for us chemists who try to be biologists. If we can get primary
human culture especially in cancer, sometime is more reflective than mice.
Although, an xenograft still needed. |
|
r***e 发帖数: 2539 | 41 2009 Stem Cells那篇文章挺有意思,
用人的ESC或者iPS免疫Balb/c小鼠,能够对付小鼠的CT26 subQ xenograft。
是什么原理,为什么要设计这样的实验? 做免疫和vaccine的人能给科普一下吗,谢谢
了。 |
|
a*****i 发帖数: 1045 | 42 主要是
humanized xenograft models for cancer researches,
optimize to manipulate cancer-related pathways and to study its potential to
validate novel therapeutic targets
这个项目一半是在药品公司做,一半是在学校做的。
也不知道好不好,如果考虑将来以后去公司,这个方向怎么样呢? |
|
i********g 发帖数: 51 | 43 搜了一下好像没有看到什么好的方法可以用,貌似都是用 soft agar, transformation
assay, xenograft...有大牛了解这个的么? |
|
O******e 发帖数: 4845 | 44 Xenograft实验最大的缺点就是默认打进去的细胞会进入目的组织然后产生肿瘤。那么
他如果想让编辑感兴趣,首先得显示细胞进入目的组织的过程在对照和Double KO之间
没有明显区别,然后取不同时期小鼠做病理观察,证明那些已进入的细胞在逐渐死亡。
另外,体外实验肯定要做得细致,显示这些细胞跟对照之间有什么重大的区别(或者
没有区别),无论是增殖也好,迁移也罢。否则一些简单的半体内实验的结果外加
两个别人太过熟悉的小鼠系,卖点实在太少。 |
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a******c 发帖数: 597 | 45 情况是这样的,癌症方面的,5个大图,每个大图3-4个小图,动物表型只有xenograft
in nude mice,其余为细胞生物学实验。分子机制方面一个大图共5个小图,和表型方
面的联系不是特别strong。老板不太care这个文章,所以不太可能愿意付很贵的page
charge。但我个人比较喜欢这篇manuscript,因为图里面的结果效应都比较strong,虽
然不是什么大发现。
本来打算投neoplasia的,但page charge实在太贵$1800. 各位能推荐个便宜点的杂志
么?
谢谢!!! |
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l**********1 发帖数: 5204 | 46 JBC
IF of JBC:
//www.bioxbio.com/if/html/J-BIOL-CHEM.html
and neoplasia:
//www.bioxbio.com/if/html/NEOPLASIA.html
xenograft |
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a*****g 发帖数: 543 | 47 貌似Ki67染色是nuclear的。 不是片子干了吧?
knockdown |
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r***e 发帖数: 2539 | 48 中间的染色有点问题。周围的是正常的情况。你是什么肿瘤细胞?
knockdown |
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k****o 发帖数: 589 | 49 如果做片子的方法没问题的话,肿瘤里的胞外基质也太丰富了吧
你knockdown的这个基因和cell adhesion有没有关系? |
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s****9 发帖数: 932 | 50 not real staining. Just background.
knockdown |
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