The phrase "acts in isolation" is correct and usable in written English.
It can be used to describe a situation where someone or something operates independently, without influence or interaction from others.
Example: "In this study, we found that the subject often acts in isolation, leading to a lack of collaboration with peers."
Alternatives: "functions independently" or "operates alone".
The decision is taken by Jeremy Hunt, the culture secretary, who acts in isolation.
Searle, who favors studying speech acts in isolation, has replied to these considerations (Searle 1992).
Like other post-translational histone modifications, acetylation rarely acts in isolation, but as part of a combination of different modifications, usually along the histone N-terminal tails, that collectively regulate chromatin function [ 10– 10].
Moreover, the president said, the United States cannot act in isolation, but must "do some coordination with other countries".
There's no way I'm going to vote for the Dream Act in isolation on the defence bill.
Mutations in cancer cells don't act in isolation; they can turn dozens, even hundreds, of other genes on and off.
It is also a network of franchised or like-minded organizations, and an ideological movement in which followers sometimes act in isolation from leaders.
The United Nations and other international organizations have tried to address the side effects of growing international trade and investment but have found it difficult to act in isolation.
But an international consensus cannot always be forged, of course, and there may be times when the United States feels it has to act in isolation to defend its interests.
We cannot act in isolation in order to protect British citizens... [Some countries have] different legal obligations and different standards to our own in the way they detain people and treat those they have detained... [but this] cannot stop us from working with them".
Environmental stressors rarely act in isolation, giving rise to interacting environmental change scenarios.
