p53 Protein News and Research

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The TP53 is a gene that instructs the cell to produce tumor protein (p53) ; a vital transcription factor and tumor suppressor. P53 is known as the “guardian of the genome” as it helps in regulating the cell cycle and acts as a tumor suppressor.

Novel mouse model of medulloblastoma

A collaboration of researchers, led by Dr. Martine Roussel of St. Jude Children's Research Hospital, has developed a novel mouse model of medulloblastoma -- the most prevalent malignant pediatric brain tumor -- that the researchers hope will more accurately represent the genetic changes involved in human brain tumor development.

30 Oct 2005

Chromosomes in the nucleus of the cell carry the material of heredity, or genes

Abnormal cell division that yields cells with an extra set of chromosomes can initiate the development of tumors in mice, researchers at Dana-Farber Cancer Institute have shown, validating a controversial theory about cancer causation put forth by a scientific visionary nearly 100 years ago.

12 Oct 2005

RPL26 and nucleolin play critical roles in controlling the production of p53

Investigators at St. Jude Children's Research Hospital have discovered a previously unrecognized mechanism that controls a key protein linked to the cell's response to stress - a finding that holds promise for new ways to enhance cancer therapies or protect cells from dying after exposure to damaging chemicals or radiation.

9 Oct 2005

PUMA protein offers critical insights for developing new anti-cancer drugs

The discovery of how the activities of the protein p53 initiate signals that trigger cell suicide offers critical insights for developing new anti-cancer drugs, according to investigators from St. Jude Children's Research Hospital.

20 Sep 2005

Discovery of multiple isoforms of the p53 tumor suppressor protein

25 years after the initial discovery of p53, Dr. David Lane and colleagues at the University of Dundee have discovered multiple isoforms of the p53 tumor suppressor protein.

29 Aug 2005

First clinical trial of a biologic nanoparticle designed to give back to cancer patients the tumor-busting gene they have lost

The phase I clinical study will enroll 20 patients with advanced solid cancers (including most common tumor types), and is the culmination of more than a decade of work by a team of researchers led by Professor Esther H. Chang, Ph.D. at the Lombardi Comprehensive Cancer Center.

25 Aug 2005

Adult stem cells may play a role in the development of some forms of cancer

Researchers at UT Southwestern Medical Center have determined that stem cells in a certain region of the brain may be the source of a particular type of incurable brain tumor and may be implicated in other types of brain cancers as well.

16 Aug 2005

MiRNA is opening up a whole new way of understanding carcinogenesis

Scientists mining vast, largely unexplored regions of the human genome have identified a small handful of mini-molecules that play a major role in the development of cancer and perhaps many other diseases.

15 Aug 2005

Introgen announces additional broad patent in China

Introgen Therapeutics has announced that a patent with broad claims directed to combination therapy with the p53 gene and conventional chemotherapy or radiation was issued in China.

11 Aug 2005

Protein p53 is the "guardian" of our genome

When DNA damage is present, p53 stops cell division and gives the cell enough time to repair it. If the damage is irreparable, the protein sets off programmed cell death and protects the cells from degeneration.

7 Aug 2005

Scientist have found an unexpected effect of the interaction of PTEN and p53 genes in early stage prostate cancer

Prostate cancer, the second leading cause of cancer death for men in the United States, is caused by changes in several tummor suppressor genes including PTEN and p53. Up to 70 percent of men with prostate cancer have lost one copy of the PTEN gene at the time of diagnosis, and p53 is absent in a high number of patients with advanced prostate cancer.

3 Aug 2005

Arf gene prevents excessive growth of blood vessels in the developing eye

A gene better known for its role in preventing cancer also plays a key role in the developing embryo, where the gene prevents excessive growth of blood vessels, according to investigators at St. Jude Children's Research Hospital.

2 Aug 2005

Biological breakthrough that could offer new hope in the fight against liver cancer

Professor John Mayer and Dr Simon Dawson, in collaboration with colleagues at Japan's Kyoto University, have discovered the function of a new liver oncoprotein - or cancer causing protein - which could be the first step to finding effective new treatments for the deadly illness.

21 Jul 2005

Compound derived from cottonseed could help improve the effectiveness of chemotherapy at treating head and neck cancer

The findings, which appear in the July issue of the journal Molecular Cancer Therapeutics, could lead to a treatment that provides an effective option to surgically removing the cancer, helping patients preserve vital organs involved in speech and swallowing.

18 Jul 2005

Researchers have discovered a key regulatory molecule for Huntington's disease

Researchers have discovered a key regulatory molecule whose overactivation by the abnormal protein produced in Huntington's disease (HD) causes the central pathologies of the disease.

6 Jul 2005

Study causes big shift in how we think about p53 gene

The cellular cascade of molecular signals that instructs cells with fatally damaged DNA to self-destruct pivots on the p53 tumor suppressor gene. If p53 is inactivated, as it is in over half of all human cancers, checks and balances on cell growth fail to operate, and body cells start to accumulate mutations, which ultimately may lead to cancer.

27 Jun 2005

Bio-engineered skin provides clues to melanoma development

When it comes to the deadly skin cancer melanoma, studying functional tissue rather than cell lines may better provide insight into the disease's development, according to new research from a Howard Hughes Medical Institute predoctoral fellow at Stanford University School of Medicine.

12 Jun 2005

Test accurately predicts aggressiveness of breast cancer

A test that measures how quickly cells are dividing is an accurate way for doctors to predict the aggressiveness of breast cancer tumors, even among women with very early stages of the disease, researchers told the 2nd ESMO Scientific & Educational Conference (ESEC) in Budapest, Hungary.

6 Jun 2005

Introgen wins European patent decision on p53 gene therapeutic

Introgen Therapeutics has announced that it was successful in winning the decision regarding its opposition of European Patent 0 390 323 before the European Patent Office (EPO) in which all claims directed to therapeutic applications of the p53 gene, the active component of Introgen's Advexin molecular therapy, were finally revoked by the EPO's Technical Board of Appeals.

3 Jun 2005

Scientists have uncovered the structure of a network of proteins that help regulate the life cycle of cells

Scientists at Memorial Sloan-Kettering Cancer Center (MSKCC) have uncovered the structure of a network of proteins that help regulate the life cycle of cells. Understanding the network's physical layout is an important step toward learning its precise function, and in finding ways to correct flaws in the system that could lead to cancer.

2 Jun 2005