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Bionovo Announces Publication Describing First Novel Dual mTOR Inhibitor, BN107, for the Treatment of Breast Cancer
Date:12/29/2009

EMERYVILLE, Calif., Dec. 29 /PRNewswire-FirstCall/ -- Bionovo, Inc. (Nasdaq: BNVI) announced today the publication of results from its study on the anti-tumor mechanism of BN107. The results of the study, published in the International Journal of Cancer, describe the potential molecular mechanisms mediating the selective pro-apoptotic (cell death) effect induced by BN107 on estrogen receptor negative (ER-) breast cancer cells.

Despite favorable advances that treatment options have had on survival, oncologists continue to face challenges in providing safe and effective treatment options for ER- breast cancer patients. In this patient population, the PI3K/Akt/mTOR pathway is often abnormally activated which allows cancer cells to grow uncontrollably and evade death. There are two mTOR protein complexes, mTORC1 and mTORC2, both of which are essential for the control of aberrant survival signals. Agents that can inhibit mTORC1 and mTORC2 at the same time might lead to effective suppression of the Akt/mTOR pathway and result in tumor cell death. The study showed that BN107 decreases the levels of proteins present in the mTORC1 and mTORC2 complexes, resulting in their demise specifically in ER- breast cancer cells. The mTOR pathway as a target for cancer therapies has been actively pursued by many pharmaceutical companies. To the Company's knowledge, this is the first report demonstrating effective inhibition of both mTOR complexes concomitantly through a novel mechanism.

As explained by Dr. Sylvia Fong, Research Scientist at Bionovo, "The ability of BN107 to induce cancer cell death is selective. We demonstrate that breast cancer cells lacking estrogen receptors are highly sensitive to BN107. Our studies show that disruption of mTOR signaling mediated by both mTORC1 and mTORC2 complexes is most likely responsible for the anti-tumor effect of BN107. Simply put, BN107 has a unique way to target a specific sub-group of breast cancer cells that currently has no selective treatment. This is exciting."

"It is critical to develop novel and safe strategies to effectively treat the patients with ER- breast cancers. We believe BN107 will result in better selectivity to hormone independent tumors based on its unique selectivity and mechanisms of action. Currently the only available treatment for this group, constituting 40% of women diagnosed with breast cancer, is chemotherapy. BN107, an oral drug candidate, should provide a chronic treatment option with a low toxicity profile," said Dr. Isaac Cohen, Chairman and CEO of Bionovo.

Bionovo, Inc.

Bionovo is a pharmaceutical company focused on the discovery and development of safe and effective treatments for women's health and cancer, markets with significant unmet needs and billions in potential annual revenue. The company applies its expertise in the biology of menopause and cancer to design new drugs derived from botanical sources which have novel mechanisms of action. Based on the results of early and mid-stage clinical trials, Bionovo believes they have discovered new classes of drug candidates within their rich pipeline with the potential to be leaders in their markets. Bionovo is headquartered in Emeryville, California and is traded on the NASDAQ Capital Market under the symbol, "BNVI". For more information about Bionovo and its programs, visit http://www.bionovo.com.

Forward Looking Statements

This release contains certain forward-looking statements relating to the business of Bionovo, Inc. that can be identified by the use of forward-looking terminology such as "believes," "expects," or similar expressions. Such forward-looking statements involve known and unknown risks and uncertainties, including uncertainties relating to product development, efficacy and safety, regulatory actions or delays, the ability to obtain or maintain patent or other proprietary intellectual property protection, market acceptance, physician acceptance, third party reimbursement, future capital requirements, competition in general and other factors that may cause actual results to be materially different from those described herein as anticipated, believed, estimated or expected. Certain of these risks and uncertainties are or will be described in greater detail in our filings with the Securities and Exchange Commission, which are available at http://www.sec.gov. Bionovo, Inc. is under no obligation (and expressly disclaims any such obligation) to update or alter its forward-looking statements whether as a result of new information, future events or otherwise.

SOURCE Bionovo, Inc.


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SOURCE Bionovo, Inc.
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